// Protocol Buffers - Google's data interchange format
// Copyright 2008 Google Inc.
// http://code.google.com/p/protobuf/
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//      http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

// Author: Robert Blackwood (ported from Kenton's)
//  Based on original Protocol Buffers design by
//  Sanjay Ghemawat, Jeff Dean, and others.

#include <map>
#include <string>

#include <google/protobuf/compiler/as3/as3_enum.h>
#include <google/protobuf/compiler/as3/as3_helpers.h>
#include <google/protobuf/io/printer.h>
#include <google/protobuf/descriptor.pb.h>
#include <google/protobuf/stubs/strutil.h>

namespace google {
namespace protobuf {
namespace compiler {
namespace as3 {

EnumGenerator::EnumGenerator(const EnumDescriptor* descriptor)
  : descriptor_(descriptor) {
  for (int i = 0; i < descriptor_->value_count(); i++) {
    const EnumValueDescriptor* value = descriptor_->value(i);
    const EnumValueDescriptor* canonical_value =
      descriptor_->FindValueByNumber(value->number());

    if (value == canonical_value) {
      canonical_values_.push_back(value);
    } else {
      Alias alias;
      alias.value = value;
      alias.canonical_value = canonical_value;
      aliases_.push_back(alias);
    }
  }
}

EnumGenerator::~EnumGenerator() {}

void EnumGenerator::Generate(io::Printer* printer) {
	bool is_own_file =
		descriptor_->containing_type() == NULL &&
		descriptor_->file()->options().java_multiple_files();
	
	//if(is_own_file) {
		printer->Print("public final class $classname$ {\n\n",
					   "classname", descriptor_->name());
		
		printer->Indent();
	//} else {
	//}
	//common part
	
	for (int i = 0; i < canonical_values_.size(); i++) {
	  map<string, string> vars;
	  vars["name"] = canonical_values_[i]->name();
	  vars["index"] = SimpleItoa(canonical_values_[i]->index());
	  vars["number"] = SimpleItoa(canonical_values_[i]->number());
	  printer->Print(vars,
	    "public static var $name$:Number = $number$;\n");
	}
	
	//-----------
	//if(is_own_file) {		
		printer->Outdent();
		printer->Print("\n}");	
	//} else {
	//}
	
  //printer->Print(
  //  "public $static$ enum $classname$ {\n",
  //  "static", is_own_file ? "" : "static",
  //  "classname", descriptor_->name());
  //printer->Indent();

  //for (int i = 0; i < canonical_values_.size(); i++) {
  //  map<string, string> vars;
  //  vars["name"] = canonical_values_[i]->name();
  //  vars["index"] = SimpleItoa(canonical_values_[i]->index());
  //  vars["number"] = SimpleItoa(canonical_values_[i]->number());
  //  printer->Print(vars,
  //    "$name$($index$, $number$),\n");
  //}

  //printer->Print(
  //  ";\n"
  //  "\n");

  // -----------------------------------------------------------------

  //for (int i = 0; i < aliases_.size(); i++) {
  //  map<string, string> vars;
  //  vars["classname"] = descriptor_->name();
  //  vars["name"] = aliases_[i].value->name();
  //  vars["canonical_name"] = aliases_[i].canonical_value->name();
  //  printer->Print(vars,
  //    "public static final $classname$ $name$ = $canonical_name$;\n");
  //}

  // -----------------------------------------------------------------

 // printer->Print(
 //   "\n"
	//"public final getNumber():int { return value; }\n"
 //   "\n"
	//"public static valueOf(value:int):$classname$ {\n"
 //   "  switch (value) {\n",
 //   "classname", descriptor_->name());
 // printer->Indent();
 // printer->Indent();

  //for (int i = 0; i < canonical_values_.size(); i++) {
  //  printer->Print(
  //    "case $number$: return $name$;\n",
  //    "name", canonical_values_[i]->name(),
  //    "number", SimpleItoa(canonical_values_[i]->number()));
  //}

  //printer->Outdent();
  //printer->Outdent();
  //printer->Print(
  //  "    default: return null;\n"
  //  "  }\n"
  //  "}\n"
  //  "\n");

  // -----------------------------------------------------------------
  // Reflection

 // printer->Print(
 //   "public final function getValueDescriptor():com.google.protobuf.Descriptors.EnumValueDescriptor {\n"
 //   "  return getDescriptor().getValues().get(index);\n"
 //   "}\n"
	//"public final function getDescriptorForType():com.google.protobuf.Descriptors.EnumDescriptors {\n"
 //   "  return getDescriptor();\n"
 //   "}\n"
 //   "public static final function getDescriptor():com.google.protobuf.Descriptors.EnumDescriptor {\n");

  // TODO(kenton):  Cache statically?  Note that we can't access descriptors
  //   at module init time because it wouldn't work with descriptor.proto, but
  //   we can cache the value the first time getDescriptor() is called.
  //if (descriptor_->containing_type() == NULL) {
  //  printer->Print(
  //    "  return $file$.getDescriptor().getEnumTypes().get($index$);\n",
  //    "file", ClassName(descriptor_->file()),
  //    "index", SimpleItoa(descriptor_->index()));
  //} else {
  //  printer->Print(
  //    "  return $parent$.getDescriptor().getEnumTypes().get($index$);\n",
  //    "parent", ClassName(descriptor_->containing_type()),
  //    "index", SimpleItoa(descriptor_->index()));
  //}

  //printer->Print(
  //  "}\n"
  //  "\n"
  //  "private static final $classname$[] VALUES = {\n"
  //  "  ",
  //  "classname", descriptor_->name());

  //for (int i = 0; i < descriptor_->value_count(); i++) {
  //  printer->Print("$name$, ",
  //    "name", descriptor_->value(i)->name());
  //}

 // printer->Print(
 //   "\n"
 //   "};\n"
 //   "public static valueOf(\n"
 //   "    com.google.protobuf.Descriptors.EnumValueDescriptor desc) {\n"
	//"  if (desc.getType() != getDescriptor()):$classname$ {\n"
 //   "    throw new as3.lang.IllegalArgumentException(\n"
 //   "      \"EnumValueDescriptor is not for this type.\");\n"
 //   "  }\n"
 //   "  return VALUES[desc.getIndex()];\n"
 //   "}\n",
 //   "classname", descriptor_->name());

  // -----------------------------------------------------------------

 // printer->Print(
	//"private final index:int;\n"
	//"private final value:int;\n"
	//"private function $classname$(index:int, value:int) {\n"
 //   "  this.index = index;\n"
 //   "  this.value = value;\n"
 //   "}\n",
 //   "classname", descriptor_->name());

 // printer->Outdent();
 // printer->Print("}\n\n");
}

}  // namespace as3
}  // namespace compiler
}  // namespace protobuf
}  // namespace google
